bug fixes

src/components/layout/header.vue

@@ -13,7 +13,7 @@
       <el-dropdown>
         <div class="user">
           <img :src="avatar" class="user-avatar" />
-          <span class="user-name" v-if="user.nickname">{{ user.nickname }}</span>
+          <span class="user-name" v-if="user.realname || user.nickname">{{ user.realname || user.nickname }}</span>
         </div>
         <el-dropdown-menu slot="dropdown">
           <el-dropdown-item icon="el-icon-user" @click.native="$router.push('/account')">个人中心</el-dropdown-item>